Driver apparatus provided with a motor and a control unit

Abstract

A seal member of a driver apparatus contacts a case and a first frame end. The seal member has an opening in which a lead wire is inserted and an inside wall surface of the opening contacts the lead wire. Further, the seal member is made of a stretchable material, and is held in position only by a binding force between the case and the first frame end. The seal member is fixedly held by the first frame end and the case after an insertion of the lead wire in the opening and disposition on the fixing member opposing face. Therefore, an installation of the seal member is performed by an inserting the lead wire into the opening and a positioning the seal member on the case.

What is claimed is: 
     
       1. A driver apparatus comprising:
 a case; 
 a stator fixedly disposed in the case; 
 a rotor rotatably disposed relative to the stator; 
 a fixing member attached to the case; 
 a controller fixedly disposed proximate to the fixing member and configured to control a power supply to a coil of the stator; and 
 a seal member partially disposed at a position between the case and the fixing member, wherein 
 the case has a fixing member opposing face that faces the fixing member, and the fixing member has a case opposing face that faces the fixing member opposing face of the case, 
 the case has a first through hole that opens on the fixing member opposing face through which a lead wire of the coil is inserted, 
 the fixing member has a second through hole that opens on the case opposing face through which the lead wire is inserted, and 
 the seal member is of a stretchable material and contacts the fixing member opposing face and the case opposing face, the seal member held in position solely by a binding force between the case and the fixing member, wherein the seal member includes:
 an opening through which the lead wire is inserted, the opening having an inside wall surface configured to contact the lead wire; 
 a base portion in contact with one of the fixing member or the case and in non-contact with an other of the fixing member or the case, the base portion having a cavity with an inner diameter greater than an outer diameter of the lead wire; 
 a rib portion having a ring shape and protruding from the base portion toward and being in contact with the other of the fixing member or the case; and 
 a protruding portion that protrudes from the base portion to define a periphery of the cavity, the protruding portion protrudes into the second through hole and has a tip portion that is disposed on one axial end of the protruding portion, the opening is positioned on the tip portion, and the protruding portion has a cylinder shape with an inner diameter that is greater than the outer diameter of the lead wire. 
 
 
     
     
       2. The driver apparatus of  claim 1 , wherein
 the protruding portion of the seal member protrudes toward the controller relative to the second through hole. 
 
     
     
       3. The driver apparatus of  claim 1 , wherein
 an inside wall surface of the protruding portion of the seal member has a tapered shape with a decreasing inner diameter that decreases toward the opening relative to the cavity. 
 
     
     
       4. The driver apparatus of  claim 3 , wherein
 the seal member has an inner tip portion that is connected to the inside wall surface of the protruding portion and positioned adjacent to the opening on a cavity side of the tip portion, and the inner tip portion has an inner diameter that continuously changes from the opening to the inside wall surface. 
 
     
     
       5. The driver apparatus of  claim 1 , wherein
 the protruding portion has an outside wall surface with a tapered shape and a decreasing outer diameter along an axial direction away from the base portion. 
 
     
     
       6. The driver apparatus of  claim 1 , wherein the lead wire and the opening have corresponding rectangular-shaped cross sections. 
     
     
       7. The driver apparatus of  claim 1 , further comprising:
 a plurality of lead wires, wherein 
 the seal member has a plurality of openings corresponding to a quantity of the plurality of lead wires. 
 
     
     
       8. The driver apparatus of  claim 1 , wherein
 the inside wall surface of the opening has surface texturing. 
 
     
     
       9. The driver apparatus of  claim 1 , wherein
 the coil has a neutral connection portion that protrudes toward the fixing member, and 
 the base portion of the seal member has a cover portion that is positioned between the fixing member and the neutral connection portion. 
 
     
     
       10. The driver apparatus of  claim 1 , wherein
 the driver apparatus serves as a power source for driving an in-vehicle power steering apparatus. 
 
     
     
       11. The driver apparatus of  claim 9 , wherein
 the cover portion of the seal member has a concave shape that concaves toward a fixing member and covers the neutral connection portion. 
 
     
     
       12. A driver apparatus comprising:
 a case; 
 a stator fixedly disposed in the case; 
 a rotor rotatably disposed relative to the stator; 
 a fixing member attached to the case; 
 a controller fixedly disposed proximate to the fixing member, the controller configured to control a power supply to a coil of the stator; and 
 a seal member partially disposed at a position between the case and the fixing member, wherein 
 the case has a fixing member opposing face that faces the fixing member, and the fixing member has a case opposing face that faces the fixing member opposing face of the case, 
 the case has a first through hole that opens on the fixing member opposing face through which a lead wire of the coil is inserted, 
 the fixing member has a second through hole that opens on the case opposing face through which the lead wire is inserted, 
 the coil has a neutral connection portion that protrudes toward the fixing member, and 
 the seal member is of a stretchable material and contacts the fixing member opposing face and the case opposing face, the seal member held in position solely by a binding force between the case and the fixing member, wherein the seal member includes:
 an opening through which the lead wire is inserted, the opening having an inside wall surface configured to contact the lead wire; and 
 a base portion in contact with one of the fixing member or the case and in non-contact with an other of the fixing member or the case, the base portion having a cover portion that is positioned between the fixing member and the neutral connection portion.